Paige Decker has a fantastic career unraveling the mysteries of her patients' DNA-until a man named Carl Parker, who claims he has been falsely convicted of murder, asks her coworker Leo Cunningham to help investigate.

Delving into the savage killings and burials of three women in a nearby state park, Leo requests new DNA analysis. When the results come back, they reveal startling discoveries that ultimately lead to his murder. Against the advice of her new boss, Paige teams up with Leo's son, Brandon, to find the killer.

Soon, Paige and Brandon uncover several suspects as they discover old secrets the Parker family wants to remain hidden and new ones implicating the lover of Paige's best friend. Can they unravel the clues in time?